Fireproof door or shutter.



E. H. MoGLOUD.

FIRE-PROOF DOOR 0R SHUTTER.

APPLICATION FILED 001.21. 1908.

Patented May 31, 1910.

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. 11 1 1 10 iLEila \rlrllhl H m m fad EDWARD H. MOCLOUD, 0F COLUMBUS,OHIO.

rmnrnoor noon on SHUTTER.

Specification of-Letters Patent.

Patented May 31, 1910.

Application filed October 21, 1908. Serial No. 458,793.

.To all whom it may concern:

Be it known that I, EDWARD H. McCLoUn, a citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented a certain new and useful Improvement in Fireproof Doors orShutters, of which the following is a specification.

The object of this invention is to provide an improved fire resistingdoor or shutter, of the filled type.

The invention is embodied in the construction herein shown and describedand then particularly pointed out in the claims.

In the accompanyin drawingsFigure I is a vertical section 0 the doorwith a portion broken out about midway its height. Fig. 2 isa view inelevation of a corner of the door. Fig. 3 is an isometric perspectiveprojected from a vertical section exhibiting interior construction. Fig.i is a fragmentary vertical sectional View taken on a plane somewhatremoved from the axis of the connecting devices. Fig. 5 is a plan viewof the corner of the door or shutter at itsend with a part of the metalremoved.

The shell of the door is made up of similarly formed strips of sheet.metal. As shown, each strip has one longitudinal margin 6 bent to standat right angles to the side or face 7 of the strip, and saidmargin hasits edge bent to form a tongue 8 standing at right angles to the margin,and the other longitudinal margin 9 bent to stand at right angles to theside or face of the strip and its edge bent to form a tongue 10 standingat right angles to the margin. Both the tongues 8 and 10 are shown to bebent in the same direction so that they lie facing each other when thestrips are placed together to form the body of the door or shutter and aainst the inner side of the face of the a jacent strip. Both the margins6 and 9 are provided with perforations. The perforation in the margin 6is plain while the perforation in the margin 9 is formed by making anumber of equal radiating slits and bending up the teeth thus formed.The

erforation in the margin 6 is'of smaller diameter than that in themargin 9, so, that its edge project's beyond the edge of the perforationin the margin 6 and forms a seat for the end of a tube 11. The tube 11extends between the seats in adjacent margins and serves to internallybrace said margins.

The metal strips formed as described are placed together to break jointsat opposite sides of the shutter or door. That is to say, for example,the margins of two strips of unlike formation are placed together andthese fitted against the inner side of a similarly formed stri at sayabout its middle, and this method of location is pursued throughout theheight of the shutter except, of course, that at the upper and lowerends of the shutter where one side piece is cut off, and its edgeprovided with a perforated margin to lap on the margin of the regularstrip. In the manufacture of the shutter or door the special end stripscanbe formed in quantity and by suitable machinery, especially wherelarge numbers of doors or shutters of standard size are to beconstructed- The tubes 11-are held from dislodgment and in line by theserrations and said tubes when the strips are properly assembled, marginto margin, form a continuous passage. Through this passage is passed along bolt or rod 12 that unites the strips to form, the body of the dooror shutter, and said bolt is secured by a nut 13 turned tightly down onits upper threaded end. The number of passages and bolts or rods 12employed in a door or shutter will be varied according to the width ofthe door or shutter. The vertical edges of the door orshutter, can beclosed by a strip 14: suitably secured thereto, as by seaming as shownin Fig. 5. The vert ical edges may also, as shown, be strengthened orreinforced by inserting a metallic bar 15 extending the entire length ofthe structure, the aforesaid margins at the ends of the strips beingremoved to permit this.

It' is desirable that the pockets or spaces formed btween the margins befilled or stufied with a suitable fire resistant material, or a poorconductor or poor radiator of-heat as indicated at 16. This material '16can be put in before both vertical edges of the structure are closed."

The door or shutter as thus constructed presents small or no liabilitytothe creation of anwopening for the passage of flame when subjected tohigh heat.

The door or shutter as thus constructed building in any desired ofmountin shown consists of a ban or bracket 17 in which are mounted suitale rollers for suspending and guiding the door or shutter on a suitabletrack, 18 on the building.-

I can be mounted for closing the opening of a' way. The instance,

In ap lications for patent of the United States ed concurrently herewithhaving Serial Numbers 458,791, 458,792 and 458,7 94, I have claimedother features herein shown and described. a

What I claim and desire to secure by Letters Patent is:

1. A fire proof door or shutter comprised of metallic strips havingtheir longitudinal margins bent to extend from the same side of thestrip, the margins of adjacent strips at one side of the structure beingbutted and located between the corresponding margins of a similarlyformed strip at'the opposite side of the structure, combined with meansfor securing said strips together consisting ofa uniting member passedthrough said margins.

2. A fire proof door or shutter comprised of metallic'strips havingtheir longitudinal margins bent to extend from the same side of thestrip, the margins being provided with perforations and the margins ofadjacent strips at one side of the structure being butted and locatedbetween the margins of a similarly formed strip at the opposite side ofthe structure, bracing tubes between said margins in line with'saidperforations, combine with a uniting bolt or rod passed through saidtubes.

3. A fire-proofdoor or shutter comprised of metallic strips having theirlongitudinal margins bent to extend from the same side of metallicstrips having their of the strip, the margins of adjacent strips at oneside of the structure being butted and located between the correspondingmargins of a similarly formed strip at the opposite side of. thestructure and extending to the opposite side to brace the same, combinedwith means for securing said strips together.

4. A fire proof door or shutter comprised of metallic strips havingtheir longitudinal margins bent to extend from the same side of thestrip, the margins of adjacent strips at one side of the structure beingbutted and located midway between the corresponding margins of asimilarly formed strip at the opposite side of the structure and adaptedto brace the same, combined with means for securing said stripstogether.

5. A fire proof door or shutter comprised longitudinal margins bent toextend from the same side of the strip and having tongues thereon themargins oit'adj acent strips at one side of the structure being buttedand located between the corresponding margins of a similarly formedstrip at the opposite side of the structure and adapted to brace thesame, combined with means for securing said strips together.

EDWARD H. MoCLOUD.

Witnesses ANNA TERESA KING, BENJAMIN FINCKEL.

